Double-acting pump.



H. B. ARNGLD.

DOUBLE ACTING PUMP.

APPLIGATIOH FILED 1111.17, 1910.

96 9 1 27. Patented Aug. 30, 1910.

2 SHEETS-8HIIET l.

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DOUBLE ACTING PUMP.

APPLICATION FILED JAN.17, 1910.

Patented Aug. 30, 1910.

2 SHEETSSHEET 2.

HENRY BROWN ARNOLD,

F BIG SPRING, TEXAS.

DOUBLE-ACTING PUMP Specification of Letters Patent.

Patented Aug. 30, 1910.

Application filed January 17, 1910. Serial No. 538,504.

To all whom it may concern: t

Be it known that I, HENRY BROWN AR- NOLD, a citizen of the UnitedStates, residing at Big Spring, in the county of Howard and State ofTexas, have invented a new and useful Double-Acting Pump, of which thefollowing is a specification.

This invention has for its object to provide a pump which delivers thefluid in a continuous stream, a supply being obtained on both strokes ofthe piston.

A further object of the invention is to provide :r pump of the kindstated which is simple in structure, easy to operate and especiallyadapted for deep wells, the standing valve being'so mounted in the pumpcylinder that it may be removed Without pulling up the cylinder or thewell tubing.

Another object of the invention is to provide a pump embodying certainnovel structural details to be hereinafter described and claimed.

The invention is illustrated in the accompanying drawings in which-Figure 1 is a central vertical sectional view of the pump. Fig. 2 is asimilar view showing the parts in another position, some of the partsbeing shown in elevation. Fig. 3 is a transverse section on the line 3-3of Fig. 1. Fig. 4 is a transverse section on the line 44 of Fig. 1. Fig.'5 is a perspective view of the standing valve, the pump cylinder beingshown broken away. 5

The pump cylinder comprises concentric inner and outer barrels and 11,respectively, spaced from each other so as to form an annular chamber 12surrounding the illner barrel. The upper end of this chamber is closedby a ring 13 having its upper surface beveled to form a valve seat 14.The chamber 12 communicates with the interior of the barrel 10, at thetop thereof, by openings 15 in the wall of said barrel. The lower end ofthe chamber 12 is closed by flaring the barrel 10 so as to engage theinner surface of the barrel 11, to which it may be soldered or otherwisemade fast. In those portions of the two barrels which are connectedtogether, are inlet openings 16 from the well.

-In the lower end of the barrel 10 are located partitions 17 and 18,respectively, the former having openings 19 into the Well. Thepartitions 17 and 18, are spaced from each other, and are connected atthe center by a tube 20 opening at its ends through said partitions. Itwill therefore be seen that the inlet from the well into that portion ofthe interior of the barrel which is between the partitions, is throughthe openings 19, whereas that portion of the barrel above the partition18, which is the upper one, is in communication with the well by the wayof the tube 20. i

The openings 19 are controlled by a valve 21 which is a disk slidablymounted on the tube 20 between the partitions, and adapted to seat oversaid openings. The upward or opening movement of the valve disk islimited by a shoulder 22 formed on the tube.

In the wall of the barrel 10, between the partitions 17 and 18, areopenings 23 establishing communication with said portion of the barrel,and the chamber 12. The diameter of the valve disk 21 is' less than theinternal diameter of the barrel 10, so that the water or other fluidentering the latter. may flow past the yalve, when it is open, and intothe chamber 12 by the way of the openings 23. The valve is faced with apacking disk of leather or suitable material.

On top of the partition 18 seats a valve 24 which controls the outletend of the tube 20, this valve also. being a disk having a packing ofleather or other suitable material on its face. The valve 24 is slidableup and down in a cage 25 rising from the partition 18, the upper end ofthis cage being formed with a short externally threaded stem 26, whichis provided for a purpose to be presently described.

The partitions 17 and 18 are providedwith a cup leather, and they areheld in place by slightly tapering the lowering end of the barrel 10 at10% To the upper end of the barrel 11 is coupled the well tubing 27which conducts the water or other fluid to .a discharge spout 28.

In the barrel 10, above the valve 24, works a piston 29, carried at thelower end of a tubular rod 30, the latter opening through the piston.The lower end of this rod is internally screw threaded, as indi: catedat 31, so that it may be screwed on the stem 26 if it is desired toremove the valves 24 and 21, as well as the artitions 17 and 18. It istherefore possib e to remove said parts from the pump cylinder withoutpulling up the latter and the well tublng. The rod 30 extends into thewell tubing 27, and

carries, above the valve seat 14, a hollow head 32. In the top of thispiston are outlet openings 33 into the tubing from the interior of thehead, the latter being in communication with the bore of the rod 30 byopenings 34 made in the latter. The openings 33 are controlled by avalve 35 seating on top of the head, and comprising a disk faced with asuitable leather or other packing, and slidably mounted on a stem 86which screws into and closes the upper end of the rod 30. The pumpoperating means will be connected to this stem. The upward or openingmovement of the valve 35 is limited by a collar 37 on the stem. TheSpent 28 is located above this valve. Between the piston 29 and the head32, the rod30 carries a valve 38 which is shaped to fit 'the seat 14,said valve being slidable on the rod, its downward travel being limitedby a collar 38* on the rod. The valve is so positioned onthe rod that itseats on the beginning of the down stroke of the piston.

The operation of the ump is as follows: On the down stroke of the iston29, the valve 21 closes, and the va ve 21 opens, whereupon the water orother fluid in the barrel, above the valve 24, is forced up through thehollow rod 30, and out of the salne through the openings 34 into thehead 32, and from the latter into the tubing 27 by the way of theopenings 33, and then to the spout 28, the valve 35 also opening on thedown stroke and seating at the end thereof. The downward travel of thepiston 29 creates a suction in the barrel 10 between the top of saidpiston and the valve 38,whereby water is drawn into that portion of thebarrel through the openings 15, the valve 21 opening to let the waterthrough the openings 19 into that portion of the barrel between thepartitions 17 and 18, from which it passes through the openings 23 intothe chamber 12, and out of the latter into that portion of the barrel 10which is above the piston 29, by the way of the openings 15. The valve38 seats at the beginning of the down stroke. On the up stroke of thepiston,

the valves 21 and 38 open, and the valves 21 and 35 close. The waterfrom the well now flows by the way of the tube 20 into that portion ofthe barrel 10 above the partition 18, and the water which had enteredthe barrel 10 above the piston 29 on the down stroke, is lifted by thepiston 29, and flows through the tubing 27 to the spout 28.

It will be evident from the foregoing, that the pump delivers the wateror other fluid in a continuous stream, a supply being obtained on bothstrokes of the piston. The pump is easy to operate, and has nocomplicated parts to get out of order.

The preferred embodiment of the invention hasbeen herein shown anddescribed, but it will be evident that various minor changes in thestructural details thereof may be resorted to without a departure fromthe invention.

What is claimed is 1. In a pump, a cylinder comprising inner and outerbarrels, the outer barrel being closed at its ends, and in communicationat its upper end with the inner barrel, spaced partitions in the lowerend of the inner barrel, that portion of said barrel which is locatedbetween the partitions having an outlet into the outer barrel, and thelower partition having openings into the well,a tube extending betweenthe partitions, and opening therethrough, a valve seating on the upperend of the tube, a valve slidably mounted on the tube, and controllingthe openings of the lower partition, a delivery tube connected to thepump cylinder, a solid piston working in the inner barrel above thepartitions, a hollow rod carrying the piston, a valve carried by the rodto close the upper end of the inner barrel at the down stroke of thepiston, and a hollow head carried by the rod above the last mentionedvalve, the illterior of said head being in communication with the boreof the rod,and having a valvecontrolled outlet into the delivery tube.

2. In a pump, a cylinder comprising inner and outer barrels, the outerbarrel being closed at its lower end. a ring seated in the upper end ofthe outer barrel for closing said end, the ring having a valve seat, andsaid outer barrel being in communication at its upper end with the innerbarrel, partitions'in the lower end of the inner barrel, that portion ofsaid barrel which is located between the partitions having an outletinto the outer barrel, and the partitions having valve-controlledopenings into the well, a delivery tube connected to the pump cylinder,a solid piston working in the inner barrel above the partitions, ahollow rod carrying the pisto'n, a hollow head carried by the rod, theinterior of said head being in communication with the bore of the rod,and having a valve-controlled outlet into the delivery tube, and a valvecarried by the rod below the aforesaid head,.said last-men- II ENRYBROWN ARNO LI).

Witnesses:

JAMES T. BROOKS, PEARL HARRINGTON.

